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RPEDE DAU COROANA!!!!!
EX: 20,21 si 22 sunt disperata repedee!!!!

RPEDE DAU COROANA EX 2021 Si 22 Sunt Disperata Repedee class=

Răspuns :

Spidie
20.
2/3*( 5/2-5/9):3/4=2/3*(40-10)/18 :3/4=2/3*30/18*4/3=10/9*4/3=40/27
21
3/4*(8/9-1/6):5/4=3/4*(16-3)18:5/4=13/24*4/5=13/30
22
[1/4+(5/2-1*3/4):7/8]*14= [1/4+(5/2-5/4):7/8]*14= (1/4-5/4*8/7)*14=
= (1/4+10/7)*14=47/28*14=47/2